Tongue pointed, furnished at the base with two strong spines, the sides of which are armed with smaller ones; trachea, œsophagus, and proventriculus as in _Furnarius_ and _Uppucerthia_; gizzard rounded, not very muscular, lined with a slightly hardened smooth coat, and filled with the remains of insects; intestinal canal of moderate size and length, furnished with two rudimentary cæca. Inches Length of œsophagus and proventriculus 1⅛ gizzard ⅜ Breadth of ditto ⁵⁄₁₆ Length of intestinal canal from gizzard to cloaca 4¾ from cæca to cloaca ¾ The parts of the skeleton of this bird which I was able to preserve, were more closely allied to the corresponding ones of Troglodytes than to those of any other genus in my possession, but differ in the following particulars: the lateral processes of the sternum bounding the posterior fissures are not so much expanded, consequently the fissures themselves are smaller; the keel is rather deeper; the portion to which the ribs are attached does not project so far forwards, but the process between the coracoids is rather longer; the interocular portion of the cranium is also rather broader than in the above mentioned genus; the pelvis, coracoids, and scapula agree both in shape and size with Troglodytes. lines Length of sternum 6¼ Breadth anteriorly 4 posteriorly 4½ Greatest width of fissures ¾ Depth of ditto 2½ Length of occiput to point of bill 14¾ Breadth of cranium 5¾ Length of pelvis 9 Breadth of ditto posteriorly 5 anteriorly 1¾ No. of cervical vertebræ 12 PHYTOTOMA RARA. _Molina._